Soldering-iron.



Patented Dec. I8, |900.

K BOOTH SOLDERING. IRON.

UNITED STATES PATENT OEEICE.

KRAFT BOOTH, OF CHICAGO,` ILLINOIS.

SOLDERING-IRON.

SPECIFICATION forming' part of Letters Patent No. 664,310, dated December` 18, 1900.

Application filed October 20, 1898. Serial No. 694,064. (No model.)

To a/ZZ whom if may concern,.-

A Beit known that I, KRAFT BOOTH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Soldering-Irons, of which the following is a specification. f

My invention relates to soldering-irons, and has for its object to provide a new and improved soldering-iron of which the following is a description, reference being had to the accompanying drawings, wherein-- Figure l is a view of a soldering-iron embodying my invention. Fig. 2 is a longitudinal section through Fig. l. Fig. 3 is a section on line 3 3, Fig. 2.

Like letters refer to like parts throughout the several figures.

In the accompanying drawings I have shown an iron embodying my'invention constructed so as to be self-heating, as it were. In this construction the soldering-iron proper, A, is made of copper in the usual manner and is formed of a solid piece. This part A is attached to the shell B, which contains the combustion-chamber B', the part A projecting into said combustion-chamber. It is of course evident that the part vA may be connected with the shell B in any desired manner. As herein illustrated, the shell B is provided at its lower end with an'opening through which the part A is received, the shell being also provided with a series of projections or engaging pieces B2, which also engage the part A. It will therefore be seen that the part A has two sets of bearings in different planes, and hence its rigidity is insured. The part A is preferably made so as to snugly fit in the opening at the end of the shell B and between the engaging faces B2. The shell Bis preferably made of cast-iron, and hence when the parts are heated the copper expands in a :greater degree than the iron, thus making a firm contact at the engaging surfaces. This expansion of the copper binds it firmly in position while the iron is being used. The `combustion --chamber B" is connected by means of a suitable opening B3, preferably through the handle B4 of the iron, with a source of gas-supply. I prefer to have this combustion-chamber connected both with a source of gas-supply anda source vof air-sup ply, as shown-for example, by means of the two tubes or pipes B5 BG-so that air is combined with the gas. These tubes or pipes are preferably elastic, so that the 1r0n may be moved about from place to place without injuring the connections. The combustionchamber B is provided with one or more suitable openings B8, by which the gas contained therein is ignited. thus ignited, it burns in the combustionchamber B", the combustion entirely surrounding the outer periphery of the part A contained wit-hin said chamber. I have found that by this construction I am able to get a much more ecient soldering-iron and still use less gas than has been heretofore possible. In this construction the burning of the gas is comparatively noiseless. I also find that this iron can be made very cheaply on account of the small amount of copper used. When the iron cools, the copper contracts and can be easily removed for pointing or for other purposes. It will thus be seen that the only part of the iron-namely, the part A- which can wear out is easily detached from the rest of the iron and can be replaced at will. The shell B, if made of cast-iron, for example, has no tendency .to wear out and can be indefinitely supplied with new pieces of copper, thus making the use of this soldering-iron `exceedingly economical.

I have shown a certain construction for purposes of illustration; but it is of course evident that the construction may be varied without departing from the spirit of my invention, and I therefore do not wish to be limited to the construction shown.

I claiml. A soldering-iron, comprising a solderinghead and holding device for the same, a shelllike portion of said holder surrounding the inner end of the head and opening in direction opposite to that of the point of the head, the head smaller in cross-section than the shell-like portion and thus projecting free from the Walls of the shell-like portion into the same; a combustion-chamber connected with and forming part of said shell-opening and surrounding the projecting head, a handle and discharge-way leading to the combustion-chamber; substantially as shown and described.

Vhen the gas is IOO 2. A Soldering-iron, comprising a soldering head and holding device for the same, a shell# like portion of said holder surrounding the inner end of the head and opening in direction oppositerto that ofv the point of the head, a combustion-chamber connected with and forming part of said shell-opening, a handle and discharge-way leading to the combustionchamber, an apron about and overhanging the rearward openings from the shell, so that the gases for combustion are directed back against the apron and then forward so fas neither to overheat the hand nor crack the glass which is being Worked upon, while at the same time heating the head by surrounding the same; substantially as shown and described. Y

'3. Asolderin'g-iron, comprising a solderinghc'ad, a shell containing a combustion-chamb'e'r and provided with an opening through which said soldering-head is received so as to project partly into the combustion-chamber, a series of bearing-points within the combustion-chamber and connected with the walls thereof, said soldering-head of such size as to slip readily into position, the soldering-head f'orme'd of material which expands more read ily under the influence of heat than the material of which the shell is made, whereby when heat is applied thereto the solderingliead expands so as to'be held rmly in position.

4." A soldering-iron, comprising a solderinghead, a hollow shell containing a combustioncllamber, an opening in said shell through which the end of the soldering-head is received, a series of projections extending from Y the inner wall of said combustion-chamber and adapted to engage the said vsolderingheadbetween its inner end and the opening in the shell and hold said soldering-head in position.

5. A soldering-iron, comprising asolderinghead av shell provided with a combustionch'ainbei, an opening in said shell through which the solderinghead passes, so that a portion of said soldering-head extends into the combustion-chamber the outer end of said chamber being closed when the soldering-head is in position, said soldering-head engagingl the shell at two points separated by a space forming part of the combustion-chainber, an igniting-opening connecting said combustion-chamber with the outer air, a handle connected with said shell, a passage way through said handle connecting with the combustion-chamber, and means for connecting said passage-way with a source of gas-su ppl y.

6. A soldering-iron, 'com prisingasolderinghead, a shell hollowed so as to form a combustion-chamber, an opening in the outer end.

of said shell smaller in cross-sectional area than the chamber and adapted to be closed by the insertion of the soldering-head, one or more projecting parts integral with said shell and projecting into said chamber, said projecting part or parts engaging the solderinghead so as to hold it in position.

KRAFT BOOTH.

Witnesses: DONALD M. CARTER,

HOMER L. KRAFT. 

